US3283085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for recording and reproducing video and audio signal simultaneously on magnetic tape
Assignee: Bell and Howell Co
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Filing: 1962-10-22
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Granted: 1966-11-01
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Expires: 1982-10-22
Abstract
No abstract record available.
Inventors
- 👤 James U Lemke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:18
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/008; G11B5/00813; G11B5/00847; G11B5/0086; G11B5/02; H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782; H04N5/7824; H04N5/7826; H04N5/78263; H04N9/00; H04N9/79; H04N9/80; H04N9/802
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A METHOD OF RECORDING TWO SEPARATE SIGNALS ON ONE SIDE OF A SINGLE MAGNETIC TAPE COMPRISING THE STEP OF RECORDING ON SIGNAL IN A FIRST TRACK EXTENDING LENGTHWISE OF THE TAPE AND SUBSEQUENTLY RECORDING THE SECOND SIGNAL AT A SATURATION LEVEL IN A PLURALITY OF TRACKS EXTENDING IN SPACED APART PARALLEL RELATIONSHIP AT A SMALL OBLIQUE ANGLE TO THE MARGIN OF THE TAPE AND OVERLYING THE FIRST TRACK, EACH OF SAID PLURALITY OF TRACKS BEING SUBSTANTIALLY NARROWER IN WIDTH THAN THE FIRST TRACK, THE WIDTH OF THE FIRST TRACK BEING SUFFICIENTLY LARGE TO SPAN SEVERAL OF THE OVERLYING NARROW TRACKS IN A DIRECTION PERPENDICULAR TO THE EDGES OF THE TAPE.
Claim 2
Independent Claim
110 words
A METHOD OF RECORDING TWO SEPARATE SIGNALS ON ONE SIDE OF A SINGLE MAGNETIC TAPE COMPRISING THE STEP OF RECORDING ON SIGNAL IN A FIRST TRACK EXTENDING LENGTHWISE OF THE TAPE AND SUBSEQUENTLY RECORDING THE SECOND SIGNAL AT A SATURATION LEVEL IN A PLURALITY OF TRACKS EXTENDING IN SPACED APART PARALLEL RELATIONSHIP AT A SMALL OBLIQUE ANGLE TO THE MARGIN OF THE TAPE AND OVERLYING THE FIRST TRACK, EACH OF SAID PLURALITY OF TRACKS BEING SUBSTANTIALLY NARROWER IN WIDTH THAN THE FIRST TRACK, THE WIDTH OF THE FIRST TRACK BEING SUFFICIENTLY LARGE TO SPAN SEVERAL OF THE OVERLYING NARROW TRACKS IN A DIRECTION PERPENDICULAR TO THE EDGES OF THE TAPE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |